οὐ γὰρ πράξιν ἀγαθὴν, ἀλλὰ καὶ εὖ ποεῖν αὐτὴν → it does not suffice to do good–one must do it well
η (Α ὀμφαλίς, -ίδος) ομφαλόςο ομφάλιος λώρος.